I plan to refinance in couple years. 5.50% is high and I was very surprised at the quote with my credit being 800.

Pardon the poor analogy, but is it like using the property's equity like a credit card?

Credit is 740+/-Work in property management and am a realtor in MN

Here's my situation: I have a good job and a six figure w-2 income, as well as an 800 credit score.

To prevent those items I suggest lots of tenant screening questions (back-round check, credit check, eviction search and income verification) and an annual maintenance plan on your properties. 

I have multiple mortgages, banking accounts, credit cards, brokerage accounts, crypto currency accounts, crowd funding accounts, employee 401k, self directed ira, employee stock plan administrator, shares in a small-town bank, I feel like I could go forever.

I did experience turnover as some took advantage of the $8k 1st time homebuyer credit and young people consolidated- moved somewhere with a roommate or back home, but they filled quickly for more $. 

About me: 27/M, DFW area TX,Salary ~ 50k gross Rent + Utilities ~ 25% of salary (shared house).Car ~ 10% of salary (9k owed and 3 years left).Credit cards are usually paid off or Utilized below 6%Credit score above 750.6 month emergency fund.

.), I am considering using my equity instead via a Home Equity Line of Credit (HELOC) to fund the next deal.  

It can't hurt to ask for some credits.